318 lines
10 KiB
Go
318 lines
10 KiB
Go
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/*
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* MinIO Cloud Storage, (C) 2017 MinIO, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package hash
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import (
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"bytes"
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"encoding/hex"
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"fmt"
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"io"
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"io/ioutil"
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"testing"
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)
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// Tests functions like Size(), MD5*(), SHA256*()
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func TestHashReaderHelperMethods(t *testing.T) {
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r, err := NewReader(bytes.NewReader([]byte("abcd")), 4, "e2fc714c4727ee9395f324cd2e7f331f", "88d4266fd4e6338d13b845fcf289579d209c897823b9217da3e161936f031589", 4, false)
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if err != nil {
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t.Fatal(err)
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}
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_, err = io.Copy(ioutil.Discard, r)
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if err != nil {
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t.Fatal(err)
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}
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if r.MD5HexString() != "e2fc714c4727ee9395f324cd2e7f331f" {
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t.Errorf("Expected md5hex \"e2fc714c4727ee9395f324cd2e7f331f\", got %s", r.MD5HexString())
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}
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if r.SHA256HexString() != "88d4266fd4e6338d13b845fcf289579d209c897823b9217da3e161936f031589" {
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t.Errorf("Expected sha256hex \"88d4266fd4e6338d13b845fcf289579d209c897823b9217da3e161936f031589\", got %s", r.SHA256HexString())
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}
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if r.MD5Base64String() != "4vxxTEcn7pOV8yTNLn8zHw==" {
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t.Errorf("Expected md5base64 \"4vxxTEcn7pOV8yTNLn8zHw==\", got \"%s\"", r.MD5Base64String())
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}
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if r.Size() != 4 {
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t.Errorf("Expected size 4, got %d", r.Size())
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}
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if r.ActualSize() != 4 {
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t.Errorf("Expected size 4, got %d", r.ActualSize())
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}
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expectedMD5, err := hex.DecodeString("e2fc714c4727ee9395f324cd2e7f331f")
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if err != nil {
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t.Fatal(err)
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}
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if !bytes.Equal(r.MD5(), expectedMD5) {
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t.Errorf("Expected md5hex \"e2fc714c4727ee9395f324cd2e7f331f\", got %s", r.MD5HexString())
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}
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if !bytes.Equal(r.MD5Current(), expectedMD5) {
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t.Errorf("Expected md5hex \"e2fc714c4727ee9395f324cd2e7f331f\", got %s", hex.EncodeToString(r.MD5Current()))
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}
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expectedSHA256, err := hex.DecodeString("88d4266fd4e6338d13b845fcf289579d209c897823b9217da3e161936f031589")
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if err != nil {
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t.Fatal(err)
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}
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if !bytes.Equal(r.SHA256(), expectedSHA256) {
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t.Errorf("Expected md5hex \"88d4266fd4e6338d13b845fcf289579d209c897823b9217da3e161936f031589\", got %s", r.SHA256HexString())
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}
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}
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// Tests hash reader checksum verification.
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func TestHashReaderVerification(t *testing.T) {
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testCases := []struct {
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desc string
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src io.Reader
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size int64
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actualSize int64
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md5hex, sha256hex string
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err error
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}{
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{
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desc: "Success, no checksum verification provided.",
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src: bytes.NewReader([]byte("abcd")),
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size: 4,
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actualSize: 4,
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},
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{
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desc: "Failure md5 mismatch.",
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src: bytes.NewReader([]byte("abcd")),
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size: 4,
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actualSize: 4,
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md5hex: "d41d8cd98f00b204e9800998ecf8427f",
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err: BadDigest{
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"d41d8cd98f00b204e9800998ecf8427f",
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"e2fc714c4727ee9395f324cd2e7f331f",
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},
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},
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{
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desc: "Failure sha256 mismatch.",
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src: bytes.NewReader([]byte("abcd")),
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size: 4,
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actualSize: 4,
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sha256hex: "88d4266fd4e6338d13b845fcf289579d209c897823b9217da3e161936f031580",
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err: SHA256Mismatch{
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"88d4266fd4e6338d13b845fcf289579d209c897823b9217da3e161936f031580",
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"88d4266fd4e6338d13b845fcf289579d209c897823b9217da3e161936f031589",
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},
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},
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{
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desc: "Nested hash reader NewReader() should merge.",
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src: mustReader(t, bytes.NewReader([]byte("abcd")), 4, "", "", 4, false),
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size: 4,
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actualSize: 4,
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},
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{
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desc: "Incorrect sha256, nested",
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src: mustReader(t, bytes.NewReader([]byte("abcd")), 4, "", "", 4, false),
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size: 4,
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actualSize: 4,
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sha256hex: "50d858e0985ecc7f60418aaf0cc5ab587f42c2570a884095a9e8ccacd0f6545c",
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err: SHA256Mismatch{
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ExpectedSHA256: "50d858e0985ecc7f60418aaf0cc5ab587f42c2570a884095a9e8ccacd0f6545c",
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CalculatedSHA256: "88d4266fd4e6338d13b845fcf289579d209c897823b9217da3e161936f031589",
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},
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},
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{
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desc: "Correct sha256, nested",
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src: mustReader(t, bytes.NewReader([]byte("abcd")), 4, "", "", 4, false),
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size: 4,
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actualSize: 4,
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sha256hex: "88d4266fd4e6338d13b845fcf289579d209c897823b9217da3e161936f031589",
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},
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{
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desc: "Correct sha256, nested, truncated",
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src: mustReader(t, bytes.NewReader([]byte("abcd-more-stuff-to-be ignored")), 4, "", "", 4, false),
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size: 4,
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actualSize: -1,
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sha256hex: "88d4266fd4e6338d13b845fcf289579d209c897823b9217da3e161936f031589",
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},
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{
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desc: "Correct sha256, nested, truncated, swapped",
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src: mustReader(t, bytes.NewReader([]byte("abcd-more-stuff-to-be ignored")), 4, "", "", -1, false),
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size: 4,
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actualSize: -1,
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sha256hex: "88d4266fd4e6338d13b845fcf289579d209c897823b9217da3e161936f031589",
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},
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{
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desc: "Incorrect MD5, nested",
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src: mustReader(t, bytes.NewReader([]byte("abcd")), 4, "", "", 4, false),
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size: 4,
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actualSize: 4,
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md5hex: "0773da587b322af3a8718cb418a715ce",
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err: BadDigest{
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ExpectedMD5: "0773da587b322af3a8718cb418a715ce",
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CalculatedMD5: "e2fc714c4727ee9395f324cd2e7f331f",
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},
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},
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{
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desc: "Correct sha256, truncated",
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src: bytes.NewReader([]byte("abcd-morethan-4-bytes")),
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size: 4,
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actualSize: 4,
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sha256hex: "88d4266fd4e6338d13b845fcf289579d209c897823b9217da3e161936f031589",
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},
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{
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desc: "Correct MD5, nested",
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src: mustReader(t, bytes.NewReader([]byte("abcd")), 4, "", "", 4, false),
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size: 4,
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actualSize: 4,
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md5hex: "e2fc714c4727ee9395f324cd2e7f331f",
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},
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{
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desc: "Correct MD5, truncated",
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src: bytes.NewReader([]byte("abcd-morethan-4-bytes")),
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size: 4,
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actualSize: 4,
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sha256hex: "",
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md5hex: "e2fc714c4727ee9395f324cd2e7f331f",
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},
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{
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desc: "Correct MD5, nested, truncated",
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src: mustReader(t, bytes.NewReader([]byte("abcd-morestuff")), -1, "", "", -1, false),
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size: 4,
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actualSize: 4,
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md5hex: "e2fc714c4727ee9395f324cd2e7f331f",
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},
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}
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for i, testCase := range testCases {
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t.Run(fmt.Sprintf("case-%d", i+1), func(t *testing.T) {
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r, err := NewReader(testCase.src, testCase.size, testCase.md5hex, testCase.sha256hex, testCase.actualSize, false)
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if err != nil {
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t.Fatalf("Test %q: Initializing reader failed %s", testCase.desc, err)
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}
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_, err = io.Copy(ioutil.Discard, r)
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if err != nil {
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if err.Error() != testCase.err.Error() {
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t.Errorf("Test %q: Expected error %s, got error %s", testCase.desc, testCase.err, err)
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}
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}
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})
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}
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}
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func mustReader(t *testing.T, src io.Reader, size int64, md5Hex, sha256Hex string, actualSize int64, strictCompat bool) *Reader {
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r, err := NewReader(src, size, md5Hex, sha256Hex, actualSize, strictCompat)
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if err != nil {
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t.Fatal(err)
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}
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return r
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}
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// Tests NewReader() constructor with invalid arguments.
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func TestHashReaderInvalidArguments(t *testing.T) {
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testCases := []struct {
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desc string
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src io.Reader
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size int64
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actualSize int64
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md5hex, sha256hex string
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success bool
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expectedErr error
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strict bool
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}{
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{
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desc: "Invalid md5sum NewReader() will fail.",
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src: bytes.NewReader([]byte("abcd")),
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size: 4,
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actualSize: 4,
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md5hex: "invalid-md5",
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success: false,
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expectedErr: BadDigest{},
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},
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{
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desc: "Invalid sha256 NewReader() will fail.",
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src: bytes.NewReader([]byte("abcd")),
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size: 4,
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actualSize: 4,
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sha256hex: "invalid-sha256",
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success: false,
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expectedErr: SHA256Mismatch{},
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},
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{
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desc: "Nested hash reader NewReader() should merge.",
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src: mustReader(t, bytes.NewReader([]byte("abcd")), 4, "", "", 4, false),
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size: 4,
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actualSize: 4,
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success: true,
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},
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{
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desc: "Mismatching sha256",
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src: mustReader(t, bytes.NewReader([]byte("abcd")), 4, "", "88d4266fd4e6338d13b845fcf289579d209c897823b9217da3e161936f031589", 4, false),
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size: 4,
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actualSize: 4,
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sha256hex: "50d858e0985ecc7f60418aaf0cc5ab587f42c2570a884095a9e8ccacd0f6545c",
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success: false,
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expectedErr: SHA256Mismatch{},
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},
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{
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desc: "Correct sha256",
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src: mustReader(t, bytes.NewReader([]byte("abcd")), 4, "", "88d4266fd4e6338d13b845fcf289579d209c897823b9217da3e161936f031589", 4, false),
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size: 4,
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actualSize: 4,
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sha256hex: "88d4266fd4e6338d13b845fcf289579d209c897823b9217da3e161936f031589",
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success: true,
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},
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{
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desc: "Mismatching MD5",
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src: mustReader(t, bytes.NewReader([]byte("abcd")), 4, "e2fc714c4727ee9395f324cd2e7f331f", "", 4, false),
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size: 4,
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actualSize: 4,
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md5hex: "0773da587b322af3a8718cb418a715ce",
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success: false,
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expectedErr: BadDigest{},
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},
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{
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desc: "Correct MD5",
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src: mustReader(t, bytes.NewReader([]byte("abcd")), 4, "e2fc714c4727ee9395f324cd2e7f331f", "", 4, false),
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size: 4,
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actualSize: 4,
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md5hex: "e2fc714c4727ee9395f324cd2e7f331f",
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success: true,
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},
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{
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desc: "Nothing, all ok",
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src: bytes.NewReader([]byte("abcd")),
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size: 4,
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actualSize: 4,
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success: true,
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},
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{
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desc: "Nested, size mismatch",
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src: mustReader(t, bytes.NewReader([]byte("abcd-morestuff")), 4, "", "", -1, false),
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size: 2,
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actualSize: -1,
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success: false,
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expectedErr: ErrSizeMismatch{Want: 4, Got: 2},
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},
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}
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for i, testCase := range testCases {
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t.Run(fmt.Sprintf("case-%d", i+1), func(t *testing.T) {
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_, err := NewReader(testCase.src, testCase.size, testCase.md5hex, testCase.sha256hex, testCase.actualSize, testCase.strict)
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if err != nil && testCase.success {
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t.Errorf("Test %q: Expected success, but got error %s instead", testCase.desc, err)
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}
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if err == nil && !testCase.success {
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t.Errorf("Test %q: Expected error, but got success", testCase.desc)
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}
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if !testCase.success {
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if err != testCase.expectedErr {
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t.Errorf("Test %q: Expected error %v, but got %v", testCase.desc, testCase.expectedErr, err)
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}
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}
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})
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}
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}
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